Radiant|Lab Grown|IGI

20.30ct G VS1 Radiant Lab Grown Diamond

ID • G/VS1 • IGI LG813655566

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG813655566

Diamond specifications and retailer prices

From €14,501 EUR
£12,756 GBP
As of November 1, 2026
Save €15,112 EUR (51%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €44,036 EUR at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 20.3ct lab-grown radiant diamond

This 20.3ct lab-grown radiant sits in the over five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG813655566 or 813655566. Listed at 16 retailers as of October 31, 2026, with a 104% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

20.30
Carat
G
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle31.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG813655566
Dimensions18.72 × 13.05 × 8.90 mm
L/W Ratio1.43
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
18.72 mm13.05 mm20.30 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG813655566
Side View
Table 67.0%Crown 34.9°Girdle: Slightly ThickPavilion 31.9°Culet: NoneDepth 68.2%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: €14,501 EUR|Low: €7,919 EUR|High: €44,036 EUR|Avg: €19,725 EUR|+2.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Taylor and Hart
November 1, 2026
Retailer 7€11,936 EUR
Retailer 1€14,501 EUR
Retailer 5€15,403 EUR
Retailer 14€15,565 EUR
Retailer 13€15,854 EUR
Retailer 8€16,921 EUR
Retailer 10€16,975 EUR
Retailer 6€17,258 EUR
Retailer 12€18,046 EUR
Retailer 2€18,055 EUR
Retailer 3€19,705 EUR
Retailer 15€24,696 EUR
Retailer 11€25,099 EUR
Retailer 9€29,613 EUR
Retailer 4€32,786 EUR
Taylor and Hart€44,036 EUR

15 data points across 16 retailers

16 retailers€14,501 EUR to €29,613 EUR

Retailer 1
-
€11,936 EUR
$13,335 USD
Price last confirmed 11 days ago
B
Retailer 2
-
€14,501 EUR
£12,756 GBP
View
Retailer 3
-
€15,403 EUR
$17,208 USD
View
Price last confirmed 8 days ago
B
Retailer 4
-
€15,565 EUR
$17,389 USD
View
B
Retailer 5
-
€15,854 EUR
$17,712 USD
View
B
Retailer 6
-
€16,921 EUR
$18,904 USD
View
B
Retailer 7
-
€16,975 EUR
$18,965 USD
View
Retailer 8
-
€17,258 EUR
$19,281 USD
View
Price last confirmed 9 days ago
B
Retailer 9
-
€18,046 EUR
$20,161 USD
View
B
Retailer 10
-
€18,055 EUR
$20,171 USD
View
Retailer 11
-
€19,705 EUR
£17,334 GBP
View
Price last confirmed 9 days ago
B
Retailer 12
-
€24,696 EUR
$27,591 USD
View
Final sale: no returns
B
Retailer 13
-
€25,099 EUR
$28,041 USD
View
B
Retailer 14
-
€29,613 EUR
View
Retailer 15
-
€32,786 EUR
A$56,352 AUD
View
Price last confirmed 10 days ago
Most Expensive
Taylor and Hart
YFN343Y · Oct 31
€44,036 EUR
$49,198 USD
View
Price under review
15 more retailers have this diamond
Prices start from €14,501 EURSave up to €15,112 EUR

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B
20.30ct Radiant
€14,501 EUR